# PHMSA Hazmat Incident I-1993080729 — PHOSPHORIC ACID SOLUTION — SEYMOUR, MO

**Citation:** PHMSA Hazmat Incident I-1993080729  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1993-06-22  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 1993-06-22 in SEYMOUR, MO.

## Document text

PHMSA hazardous materials incident report I-1993080729.
Incident date: 1993-06-22.
Location: SEYMOUR, MO.
Mode: Rail.
Carrier/reporter: BURLINGTON NORTHERN RR CO.
Shipper: FARMLAND INDUSTRIES INC / OCCIDENTAL CHEMICAL CO.
Materials: UN1805; PHOSPHORIC ACID SOLUTION; hazard class 8; 13088 LGA released | UN1805; PHOSPHORIC ACID SOLUTION; hazard class 8; 2696 LGA released | UN1805; PHOSPHORIC ACID SOLUTION; hazard class 8; 2889 LGA released | UN1805; PHOSPHORIC ACID SOLUTION; hazard class 8; 3399 LGA released | UN1805; PHOSPHORIC ACID SOLUTION; hazard class 8; 5643 LGA released | UN1805; PHOSPHORIC ACID SOLUTION; hazard class 8; 7594 LGA released.
What failed: Auxiliary Valve; Basic Material; Piping or Fittings / Basic Material.
How failed: Cracked / Punctured / Ripped or Torn.
Reported failure causes: Derailment; Rollover Accident / Rollover Accident; Derailment.
Reported result: Spillage.
Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.

## Provenance

- Official: Yes
- Source: <https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=hBW8vr2VXbQqDDTtitmykA%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `5fb68960f0be8dc4806c8e590147ea497a339db42131255e7917ca5ab9e2cc11`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-24T10:16:33.896Z
- Document slug: `phmsa-hazmat-incident-i-1993080729`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-1993080729",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=hBW8vr2VXbQqDDTtitmykA%3D%3D",
  "rowCount": 6,
  "carrierReporterNames": [
    "BURLINGTON NORTHERN RR CO"
  ],
  "shipperNames": [
    "FARMLAND INDUSTRIES INC",
    "OCCIDENTAL CHEMICAL CO"
  ],
  "routes": [
    "MP 237"
  ],
  "cities": [
    "SEYMOUR"
  ],
  "states": [
    "MO"
  ],
  "originCities": [],
  "modes": [
    "Rail"
  ],
  "materials": [
    {
      "identificationNumber": "UN1805",
      "commodityName": "PHOSPHORIC ACID SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "13088",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1805",
      "commodityName": "PHOSPHORIC ACID SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "2696",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1805",
      "commodityName": "PHOSPHORIC ACID SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "2889",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1805",
      "commodityName": "PHOSPHORIC ACID SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "3399",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1805",
      "commodityName": "PHOSPHORIC ACID SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "5643",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1805",
      "commodityName": "PHOSPHORIC ACID SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "7594",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "14417",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "14684",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "14708",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "14710",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    }
  ],
  "reportingRuleContext": [
    "171.15",
    "171.16"
  ],
  "caveat": "Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.",
  "privacyCaveat": "The public CSV excludes preparer contact fields. Event Description is intentionally excluded from normalized records and search output to reduce incidental personal-information risk.",
  "jurisdiction": "US"
}
```